CN209086022U - A kind of test device and its sample introduction mechanism - Google Patents

Abstract

The utility model discloses a kind of test device and its sample introduction mechanisms, comprising: vaporization module including gasification shell, the sample holes being provided on gasification shell, is provided with the intracorporal gasification chamber of gasification shell and for the heating member of heating and gasifying chamber；Negative pressure component including the negative tube for being connected to described gasification shell one end and being in communication with the outside and is installed in the first valve body for controlling the negative tube on the negative tube and opening and closing；Connection component controls the second valve body of connecting tube opening and closing, the accuracy of test data when improving test catalyst test including the connecting tube being connected between gasification shell and test device with adjustable pressure and being installed in the connecting tube.

Description

A kind of test device and its sample introduction mechanism

Technical field

The utility model relates to detection device more particularly to a kind of test device and its sample introduction mechanisms.

Background technique

In recent years, the weight of people is increasingly caused using the purification techniques that Photocatalytic Oxidation With Semiconductors eliminate environmental contaminants Depending on, and gradually develop into an important new technology in environmental pollution treatment technology.Formaldehyde is a kind of common air pollution Object, condensing temperature are -19.5 DEG C, are usually gaseous state under room temperature, but its is soluble easily in water, general to match by the way that formaldehyde is miscible with water It is set to formalin.Formaldehyde it is from a wealth of sources, formaldehyde has strong impulse effect to skin and mucous membrane.Research shows that: formaldehyde tool There is strong carcinogenic and tumor promotion.Lot of documents record, influence of the formaldehyde poisoning to human health mainly show allotriosmia, Stimulation, allergy, abnormal pulmonary function, dysfunction of liver and immunologic dysfunction etc..And by photocatalysis oxidation technique, it can Formaldehyde is directly or indirectly oxidized into intermediate product, i.e. carbon dioxide and water, to achieve the purpose that remove formaldehyde.

In photocatalysis oxidation technique, the selection of catalyst is a popular project, and different catalyst will affect first Oxidation activity when oxidation of aldehydes.Therefore, the searching of suitable catalyst is a heat subject in photocatalysis oxidation technique.In order to Facilitate the test of catalyst, number of patent application is that the Chinese patent of 201820295327.X discloses a kind of inspection of formaldehyde removal rate Device is surveyed, which includes transparent sealing chamber, the ultraviolet lamp tube for being set to the case lid medial surface, is covered on the case lid On sampling port lid, be set on the case lid micro-injection hole, be fixedly connected by drawstring with the sampling port lid medial surface Methylene oxide detecting instrument, " ︺ " the shape specimen holder being fixedly arranged in the chamber and the wind being fixedly arranged on first inner sidewall of chamber Fan.

When the device use process, first need to catalyst to be tested be put into box house, pass through micro-injection hole will Formalin is injected on " ︺ " shape specimen holder, then so that the formaldehyde in formalin is volatilized by fan, is passed through formaldehyde examination Instrument can detecte initial content of formaldehyde numerical value.It is then turned on ultraviolet lamp, after some time, detects content of formaldehyde number again Value.By calculating, the catalytic efficiency of the catalyst PARA FORMALDEHYDE PRILLS(91,95) can be obtained.

However, can not determine that formalin is waved completely in cabinet in the above-mentioned catalytic efficiency testing scheme to catalyst The time of hair, therefore its test result is it is difficult to ensure that be to complete after volatilizing completely in the formalin in cabinet, this just holds Easily lead to test result inaccuracy.And when by formalin by micro-injection hole injection testing case, formalin has It may be splashed in droplets on photocatalyst catalyst, be unfavorable for the volatilization of formalin in this way, test can also be tied Fruit impacts.

Utility model content

The utility model provides a kind of test device and its sample introduction mechanism, test data when improving test catalyst test Accuracy.

On the one hand the utility model provides a kind of test device sample introduction mechanism, comprising: vaporization module, including gasification shell, It is provided with the sample holes to gasify on shell, is provided with the intracorporal gasification chamber of gasification shell and the heating member for heating and gasifying chamber； Negative pressure component, including being connected to described gasification shell one end and the negative tube that is in communication with the outside and being installed on the negative tube is controlled Make the first valve body of the negative tube opening and closing；Connection component, the test including being connected to gasification shell and with adjustable pressure Connecting tube between device and it is installed in the second valve body that connecting tube opening and closing is controlled in the connecting tube.

In a kind of embodiment, the sample holes are the unidirectional injection for preventing gasification intracavity gas from overflowing from sample holes Hole.

In a kind of embodiment, the heating member includes the heated shell abutted with gasification shell and is arranged in institute State the heater strip inside heated shell.

On the other hand the utility model provides a kind of test device, including main body and the detector being installed in main body, Include the sample introduction mechanism such as any one of above embodiment, is installed with vacuum pump in the main body.

In a kind of embodiment, the connecting tube is detachably connected with the main body.

In a kind of embodiment, the detector is detachably connected with the main body.

In a kind of embodiment, connected between the vacuum pump and the main body by third valve body.

In a kind of embodiment, the inlet being connected to body interior is set, the inlet connects in the main body It is connected to the transparency window of closing inlet, the barn door for closing transparency window is additionally provided in the main body.

In a kind of embodiment, the main body is enclosed by impermeable tabula rasa.

In a kind of embodiment, several fans are provided in the main body.

In utility model, by increasing sample introduction mechanism, escaping gas solution is made to first pass through heating in vaporization module Part heating is gasified totally, and is then cooperated by negative pressure component and connection component, and being located at the gas in gasification chamber, all indentation is surveyed Trial assembly is set, and the second valve body is then shut off, and be can be avoided formaldehyde gas and is carried out flowing out test device in test process in test device, To ensure that the accuracy of test result.And connecting tube and main body are detachably connected and are detachably connected with detector and main body Design can obtain test photochemical catalyst to various gas test results by replacement sample introduction mechanism and detector.

Detailed description of the invention

Fig. 1 is a kind of structural schematic diagram of sample introduction mechanism of the utility model embodiment；

Fig. 2 is a kind of schematic cross-section of test device of the utility model embodiment；

Fig. 3 is a kind of structural schematic diagram of test device of the utility model embodiment；

Fig. 4 is the schematic cross-section of the utility model embodiment inlet.

Wherein, appended drawing reference is as follows:

1, sample introduction mechanism；11, negative pressure component；111, negative tube；112, the first valve body；12, vaporization module；121, gasify shell Body；122, sample holes；1221, check valve；123, gasification chamber；124, heating member；1241, heated shell；1242, heater strip；13, Connection component；131, connecting tube；132, the second valve body；2, main body；21, test chamber；22, inlet；23, transparency window；24, shading Plate；25, sealing strip；3, vacuum pump；31, third valve body；4, air gauge；5, LED lamp panel；6, detector；7, fan.

Specific embodiment

It is practical new below in conjunction with this to keep the purpose of this utility model, feature, advantage more obvious and understandable Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched The embodiment stated is only the utility model a part of the embodiment, and not all embodiments.Based on the implementation in the utility model Example, those skilled in the art's every other embodiment obtained without making creative work, belongs to this reality With novel protected range.

Referring to Fig. 1 and Fig. 2, Fig. 1 is a kind of structural schematic diagram of sample introduction mechanism 1 of the utility model embodiment.Fig. 2 is this A kind of schematic cross-section of test device of utility model embodiment.

A kind of sample introduction mechanism 1 of test device of the present embodiment is shown combined with Figure 1 and Figure 2, includes sequentially connected negative Press component 11, vaporization module 12 and connection component 13.

Wherein, vaporization module 12 includes gasification shell 121, the sample holes 122 being provided on gasification shell 121, is provided with Gasify the gasification chamber 123 in shell 121 and the heating member 124 for heating and gasifying chamber 123.

Sample holes 122 can be the micro-injection hole cooperated with syringe needle head shapes.Sample holes 122 or guiding Liquid enters the unidirectional injection orifice in gasification chamber 123 from the external world.Unidirectional injection orifice includes hole body and is installed in inside hole body Check valve 1221.The design of check valve 1221 can make the gas being located in gasification chamber 123 and/or liquid can not be from sample holes 122 outwardly spread.

Heating member 124 can be installed in inside gasification shell 121, can also be installed in the outside of gasification shell 121.Heating Part 124 includes heated shell 1241 and the heater strip 1242 that is arranged in inside heated shell 1241, and heater strip 1242 can be Pass through the resistive heater being electrically connected with power supply, when resistive heater is powered, heating member 124 heats gasification chamber 123. Heated shell 1241 can be connected on the arbitrary face of gasification shell 121, can also be approached between heated shell 1241 but not Contact is only transferred heat on gasification shell 121 by the heat transfer of air, to realize the purpose of heating and gasifying chamber 123. The heat exchange pattern that the embodiments of the present invention are not intended to limit heating member 124 between the shell 121 that gasifies, it should be understood that real Border application in can be realized heating member 124 be gasify shell 121 heat any heat exchange pattern should belong to this it is practical newly The protection scope of type embodiment.

Negative pressure component 11 is connected in any surface of gasification shell 121, and preferably negative pressure component 11 is connected to gasification shell 121 do not open up on the end face of sample holes 122.Negative pressure component 11 include negative tube 111 and positioned at the middle part of negative tube 111 to control The first valve body 112 that negative tube 111 opens and closes.111 middle part of negative tube that is located at not necessarily is located in 111 length of negative tube Between position of halving, as long as be located at 111 length of negative tube on a certain suitable position.One end of negative tube 111 is connected to gasification It is connected on shell 121 and with gasification chamber 123, the other end of negative tube 111 is connected to external atmosphere pressure.

Connection component 13 is again connected in any surface of gasification shell 121, and preferably connection component 13 is connected to gasification On shell 121 and it is located at the right opposite of negative pressure component 11, i.e. the end face of gasification shell 121 that is connected of connection component 13, and it is negative The end face for the gasification shell 121 that pressure component 11 is connected is two end faces opposite on gasification shell 121.Connection component 13 includes Connecting tube 131 and the second valve body 132 that the opening and closing of connecting tube 131 is controlled positioned at 131 middle part of connecting tube.It is described to be located at connecting tube 131 middle parts are not necessarily located at the intermediate position of halving of 131 length of connecting tube, as long as being located at a certain suitable in 131 length of connecting tube Coincidence is set.One end of connecting tube 131 is connected on gasification shell 121 and is connected to gasification chamber 123, connecting tube 131 it is another One end with the test device of the utility model embodiment for being connected to.Connecting tube 131 and negative tube 111 can be flexible pipe can also To be rigid pipe.

Fig. 3 is a kind of structural schematic diagram of test device of the utility model embodiment.

In conjunction with Fig. 2 and Fig. 3, a kind of test device of the utility model embodiment is shown, including the utility model is above-mentioned Feeding mechanism, main body 2, inlet 22, power supply, vacuum pump 3, air gauge 4, LED lamp panel 5 and the detector 6 of embodiment.

Main body 2 is enclosed test chamber 21 by impermeable tabula rasa, and main body 2 is box shaped, the master of certain the utility model embodiment Body 2 is not limited only to box-like, or other shapes, such as: spherical, irregular shape, the utility model embodiment is not It is limited.Impermeable tabula rasa can be selected as stainless steel plate, naturally it is also possible to be other materials, the utility model embodiment does not limit System.The connecting tube 131 being connected to test chamber 21 is removably connected in any surface of main body 2.Main body 2 can with connecting tube 131 The modes such as dismantling connection mode can be clamping, band binds, is bolted, the utility model embodiment do not do excessive limitation, But no matter which kind of connection type, all need to guarantee to seal between connecting tube 131 and the test chamber of main body 2, prevent gas leakage.

Vacuum pump 3 is connected on the body 2 and with test chamber 21 by the connection of third valve body 31.Third valve body 31 passes through pipeline One end be fixed on vacuum pump 3, the other end is affixed to be connected on the body 2 and with test chamber.Pipeline and vacuum pump 3 and main body 2 Fixed connection mode the utility model embodiment does not do excessive limitation, but no matter which kind of connection type, all need to guarantee pipeline and main body 2 It is sealed between test chamber and between pipeline and vacuum pump 3, prevents gas leakage.

Vacuum pump 3 can be rotary-vane vaccum pump, Roots vaccum pump, dry screw vacuum pump, oil-free claw vacuum pump, nothing Oil piston vacuum pump, vacuum pump using circulatory water are also possible to turbomolecular pump etc., and the utility model embodiment is not to vacuum pump Type is limited, it is all be able to achieve air pressure in test chamber 21 and be less than the pump housing of external atmosphere pressure belong to the utility model implementation The protection scope of example.

The type of detector 6 can there are many, can carry out according to actual needs detector 6 function and type selection and Installation, the utility model embodiment with no restrictions, such as: can be content of formaldehyde detector or the inspection of other gas content Instrument is surveyed, the test mouth of test gas content is detachably connected in main body 2 by same connection component 13.Connection type ginseng Examine the detachable connection method of main body 2 Yu connecting tube 131.It can be clamping, the modes such as band binds, is bolted, this is practical New embodiment does not do excessive limitation, but no matter which kind of connection type, all need to guarantee connecting tube 131 and main body 2 test chamber it Between seal, prevent gas leakage.

Air gauge 4 it is same it is affixed on the body 2, and the measuring mouth of air gauge 4 is connected to test chamber 21.Air gauge 4 and master 2 fixed connection mode the utility model embodiment of body does not do excessive limitation, but no matter which kind of connection type, all need to guarantee air gauge 4 with It is sealed between the test chamber 21 of main body 2, prevents gas leakage.

LED lamp panel 5 is installed in the top of 2 inner wall of main body.Main body 2, which is located in test chamber 21, is additionally provided with several promotion tests The fan 7 that gas flows in chamber 21.Fan 7 can be fixed on the inner wall of main body 2, can also directly be erected in test chamber 21 And it is not contacted with main body 2.

Fig. 4 is the schematic cross-section of the utility model embodiment inlet 22.

In conjunction with Fig. 2 and Fig. 4, shows and be additionally provided with the extraneous inlet with test chamber 21 of connection in the present embodiment main body 2 22.The top that main body 2 is located at inlet 22 is hinged with the transparency window 23 of closing inlet 22 and lid is located at 23 surface of transparency window Barn door 24.Transparency window 23 is preferably completely covered in the area of barn door 24.Main body 2 is located at circumferential be bonded with of inlet 22 and mentions The sealing strip 25 of high transparency window 23 and 22 leakproofness of inlet, sealing strip 25 can be rubber strip.

When the test device is used to test the catalytic efficiency of photochemical catalyst PARA FORMALDEHYDE PRILLS(91,95), firstly, by transparency window 23 and shading Plate 24 is rotated away from the direction of inlet 22, and inlet 22 is opened, and photochemical catalyst is put into test from inlet 22 In chamber 21.Then transparency window 23 and barn door 24 are rotated towards the direction close to inlet 22, makes transparency window 23 and barn door 24 closing inlets 22.

Secondly, the first valve body 112 of closing, the second valve body 132 and third valve body 31, pass through sample holes 122 for formalin It injects in gasification chamber 123, starts heating member 124, make the formalin in 124 heating and gasifying chamber 123 of heating member, to make formaldehyde Formaldehyde Gasification in solution forms formaldehyde gas.

Again, third valve body 31 is opened, vacuum pump 3 is started, data are read according to air gauge 4, until external atmosphere pressure is greater than Data in test chamber 21 close vacuum pump 3 and third valve body 31, successively open the second valve of connection gasification shell 121 and main body 2 Body 132 and the first valve body 112 are pressed into formaldehyde gas and outside air in test chamber 21.

In this step, due to the air pressure in test chamber 21 be less than external atmosphere pressure, outside air by negative tube 111 into Enter gasification chamber 123, meanwhile, the formaldehyde gas in gasification chamber 123 passes through connecting tube 131 together with outside air and enters test chamber In 21.

Then, data are read according to air gauge 4, until data are close or equal to external atmosphere pressure, closing in test chamber 21 Second valve body 132 of connection gasification shell 121 and main body 2, opens fan 7, and open 6 and of detector 6 and connecting detection instrument The valve body of main body 2, until reading initial concentration of formaldehyde after detector stable reading.

In this step, since the second valve body 132 is closed, no matter the formalin in gasification chamber 123 whether volatilize completely, Whether formaldehyde gas is completely into test chamber 21, and the formaldehyde initial content in test chamber 21 will not change, to avoid The inaccuracy of experimental result caused by changing during the reaction as formaldehyde initial content.

Finally, closing fan 7, after opening 5 a period of time of LED lamp panel according to requirement of experiment, the reading of detector 6 is read, Concentration of formaldehyde after being catalyzed can carry out the calculating of experimental result with concentration of formaldehyde after initial concentration of formaldehyde and catalysis, obtain first Aldehyde degradation rate.

The utility model is also used as the degradation rate of other volatile organic matters other than the test of Degradation Formaldehyde rate Test.Wherein, it according to the volatility of organic matter and the property of catalyst, can choose whether using heating member and LED lamp panel. For example, when volatile organic matter is at room temperature volatilizable, just without heating member heating；When catalyst is commonly to connect When touching catalyst, photocatalysis is carried out without opening LED lamp panel.

In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example Point is contained at least one embodiment or example of the utility model.Moreover, description specific features, structure, material or Feature may be combined in any suitable manner in any one or more of the embodiments or examples.In addition, in not conflicting situation Under, those skilled in the art can be by different embodiments or examples described in this specification and different embodiments or examples Feature be combined.

In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance Or implicitly indicate the quantity of indicated technical characteristic." first " is defined as a result, the feature of " second " can be expressed or hidden It include at least one this feature containing ground.The meaning of " plurality " is two or more in the description of the present invention, unless Separately there is clearly specific restriction.

Above description is only a specific implementation of the present invention, but the protection scope of the utility model is not limited to In this, anyone skilled in the art within the technical scope disclosed by the utility model, can readily occur in variation Or replacement, it should be covered within the scope of the utility model.Therefore, the protection scope of the utility model should be with the power Subject to the protection scope that benefit requires.

Claims (10)

1. a kind of test device sample introduction mechanism characterized by comprising

Vaporization module (12) including gasification shell (121), the sample holes (122) being provided in gasification shell (121), is provided with Gasify the gasification chamber (123) in shell (121) and the heating member (124) for heating and gasifying chamber (123)；

Negative pressure component (11), including the negative tube (111) and dress for being connected to described gasification shell (121) one end and being in communication with the outside It is located at the first valve body (112) that the negative tube (111) opening and closing is controlled on the negative tube (111)；

Connection component (13), including the connection being connected between the test device to gasify shell (121) and with adjustable pressure Pipe (131) and the second valve body (132) for being installed in control connecting tube (131) opening and closing on the connecting tube (131).

2. sample introduction mechanism according to claim 1, which is characterized in that the sample holes (122) are to prevent gasification chamber (123) The unidirectional injection orifice that interior gas is overflowed from sample holes (122).

3. sample introduction mechanism according to claim 1, which is characterized in that the heating member (124) include and gasification shell (121) heated shell (1241) and setting abutted the heater strip (1242) internal in the heated shell (1241).

4. a kind of test device, including main body (2) and the detector (6) being installed on main body (2), which is characterized in that including Have sample introduction mechanism as described in any one of claims 1-3 (1), is installed with vacuum pump (3) on the main body (2).

5. test device according to claim 4, which is characterized in that the connecting tube (131) and the main body (2) are removable Unload connection.

6. test device according to claim 4, which is characterized in that the detector (6) and the main body (2) are detachable Connection.

7. test device according to claim 4, which is characterized in that lead between the vacuum pump (3) and the main body (2) Cross third valve body (31) connection.

8. test device according to claim 4, which is characterized in that connect inside setting and main body (2) on the main body (2) Logical inlet (22), the inlet (22) are connected with the transparency window (23) of closing inlet (22), go back on the main body (2) It is provided with the barn door (24) for closing transparency window (23).

9. test device according to claim 4, which is characterized in that the main body (2) is enclosed by impermeable tabula rasa.

10. test device according to claim 4, which is characterized in that be provided with fan (7) in the main body (2).